Portable toothbrush sterilizer



FIG. 1 is a perspective view of a portable toothbrush sterilizer showing my new design;

FIG. 2 is a front plan view thereof;

FIG. 3 is a rear plan view thereof;

FIG. 4 is a left side plan view thereof;

FIG. 5 is a right side plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a reference drawing showing the partially open condition of the lid thereof;

FIG. 9 is a reference drawing showing the fully open condition of the lid thereof; and,

FIG. 10 is a reference drawing showing the condition of having separated the protecting cap from the body thereof. 

The ornamental design for a portable toothbrush sterilizer, as shown and described. 